Amazi yuzuza ibitanda, azwi kandi nka MBBR yuzuza, ni ubwoko bushya bwo gutwara bioactive. Ifata formulaire ya siyanse, ukurikije ubuziranenge bwamazi akenewe, igahuza ubwoko butandukanye bwa mikorobe mu bikoresho bya polymer bifasha gukura vuba kwa mikorobe mu mugereka. Imiterere yuzuye yuzuzanya ni igiteranyo cyibice bitatu byuruziga rwimbere imbere no hanze, buri ruziga rufite icyerekezo kimwe imbere na 36 cyimbere hanze, gifite imiterere yihariye, kandi uwuzuza ahagarikwa mumazi mugihe gikora gisanzwe. Bagiteri ya anaerobic ikura imbere yuzuza kugirango itange denitrification; bacteri zo mu kirere zikura hanze kugirango zikureho ibinyabuzima, kandi hariho inzira ya nitrifasiya na denitrification muburyo bwose bwo kuvura. Hamwe nibyiza byubuso bunini bwihariye, hydrophilique na affinity nziza, ibikorwa biologiya bihanitse, firime yamanitse byihuse, ingaruka nziza yo kuvura, ubuzima bumara igihe kirekire, nibindi, nuburyo bwiza bwo gukuraho azote ya amoniya, decarbonisation no gukuraho fosifore, kweza imyanda, kongera gukoresha amazi, deodorizasi yimyanda COD, BOD kugirango uzamure igipimo.